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PAMS
Technical Documentation
NSE–3
System Module
Original 11/97
Page 3 – 16
RTC Backup Battery
The RTC block in CCONT needs a power backup to keep the clock run-
ning when the phone battery is disconnected. The backup power is sup-
plied from a rechargable polyacene battery that can keep the clock run-
ning minimum of 10 minutes. The backup battery is charged from the
main battery through CHAPS.
Signal
Parameter
Min
Typ
Max
Unit
Notes
VBACK
Backup battery charg-
ing from CHAPS
3.02
3.15
3.28
V
Backup battery charg-
ing from CHAPS
100
200
500
uA
Vout@VBAT–0.2V
VBACK
Backup battery supply
to CCONT
2
3.28
V
Battery capacity
65uAh
Backup battery supply
to CCONT
80
uA
Buzzer
Signal
Maximum
output cur-
rent
Input
high level
Input
low level
Level (PWM)
range, %
Frequency
range, Hz
BuzzPWM /
BUZZER
2mA
2.5V
0.2V
0...50 (128 lin-
ear steps)
440...4700
Summary of Contents for NSE-3 SERIES
Page 3: ...NSE 3 SeriesTransceivers PAMS Technical Documentation Original 11 97 Chapter 1 Foreword ...
Page 7: ...NSE 3 Series Transceivers PAMS Technical Documentation Original 11 97 Chapter 3 System Module ...
Page 80: ...PAMS Technical Documentation Original 11 97 Chapter 4 UI Module UE4 ...
Page 83: ...PAMS Technical Documentation UI Module UE4 Page 4 4 Original 11 97 Baseband Block Diagram ...
Page 99: ...UIF Module UE4 Original 11 97 4 A3 4 Layout Diagram of UE4 Version 10 ...
Page 100: ...PAMS Technical Documentation Original 08 96 Appendix 1 TRANSCEIVER NSE 3NX ...
Page 139: ...PAMS Technical Documentation Original 11 97 HFU 2 ...
Page 146: ...PAMS Technical Documentation HFU 2 Page 8 Original 11 97 Exploded View of HFU 2 3 2 4 5 1 ...
Page 153: ...PAMS Technical Documentation HFU 2 Page 15 Original 11 97 This page intentionally left blank ...
Page 154: ...PAMS Technical Documentation Original 11 97 CARK 64 Installation Guide ...
Page 158: ...PAMS Technical Documentation CARK 64 Page 5 Original 11 97 This page intentionally left blank ...
Page 159: ...PAMS Technical Documentation Original 11 97 CARK 91 Installation Guide ...
Page 167: ...PAMS Technical Documentation CARK 91 Page 9 Original 11 97 This page intentionally left blank ...
Page 168: ...NSE K B 3 Series Transceivers PAMS Technical Documentation Original 11 97 Service Tools ...
Page 193: ...NSE 3 System Module UP8T Original 11 97 3 A3 1 Block Diagram of System RF Blocks ...
Page 203: ...NSE 3 Series Transceivers PAMS Technical Documentation Original 11 97 Tuning Instructions ...